Attachment for routing machines



S. W. SMALL Jan. 2, 1934.

ATTACHMENT FOR ROUTING MACHINES Filed Jan. 6, 1951 4 Sheets-Sheet l Inventor A Home y Jan. 2, 1934. 5 w SMALL ATTACHMENT FOR ROUTING MACHINES Filed Jan. 1951 4 Sheets-Sheet 2 Q By I C Allorney Jan. 2, 1934. S w. SMALL 1,941,629

ATTACHMENT FOR ROUTING MACHINES gmm Allorney Jan. 2, 1934. s. w SMALL ATTACHMENT FOR ROUTING MACHINES Filed Jan. 6, 1931 4 Sheets-Sheet 4 1n veninr HillIIIIIIIIIHIHIIIIlllllllllllldlllllllllIIIIIIHIHIIIIIIIIIL A llorney Patented Jan. 2, 1934 UNITED STATES PATENT OFFICE Claims.

Thisinvention appertains to an improvement in routing, shaving and mortising machines and more particularly to a novel attachment whereby flat stereotyped plates can be routed, shaved and 6 mortised.

The principal object of the invention is to provide an attachment for cylinder routing machines, whereby flat stereotype plates can be routed and mortised, thus dispensing with the requirement of a second machine for this service.

Other important objects and advantages of the invention will be found in the following specification.

In the drawings:

Figure 1 represents a front elevational view of a conventional cylinder routing machine with the attachment installed thereon.

Fig. 2 represents a vertical sectional transverse view through the routing machine with the attachments installed thereon.

Fig. 3 represents a top plan view of the bed plate of the attachment, with the guides and shaver attachment.

Fig. 4 represents a fragmentary top plan view of the bed plate with the working lockup clamps disposed thereover.

Fig. 5 represents a bottom plan view of the bed plate.

Fig. 6 represents a fragmentary cross sectional view through the cylinder of the conventional.

routing machine and showing the use of the shaver on the bed plate.

Fig. '7 represents a fragmentary longitudinal sectional view through the bed .of the routing machine and the bed plate engaged thereon.

Fig. 8 represents a fragmentary sectional view taken substantially on the line 8-8 of Fig. 4.

Fig. 9 is a sectional view taken substantially on the line 9-9 of Fig. 1.

Fig. 10 represents a fragmentary detail sectional view of one of the work engaging blocks.

Referring to the drawings wherein like numerals designate like parts, it can be seen that numeral 5 generally refers to the conventional part of the routing machine. Numeral 6 represents the usual feed screw for feeding the cutter '7 longitudinally of the cylinder 8. Numeral 9 represents generally the means for rotating the cylinder 8. Numeral 5' represents the adjusting means for the cutter while numeral 6' represents a detent for retaining the cutter in adjusted position.

In carrying out the present invention, the block 10 is secured to the usual frame 11 of the routing machine, and this block 10 is provided with an L slot 12 therein (see Fig. 1) for receiving the flanged end 13 of the bed plate 14.

This bed plate 14' as shown in Fig. 5 has a pair of wear strips or cleats l5-15, secured to the bottom side thereof for engagement against 60. the slit cylinder 16, which also forms part of the present invention. As is clearly shown in Fig. 1, this cylinder 16, which circumscribes the conventional cylinder 8 is provided with a pair of ring gears 17l7 thereon, one of which meshes v with the rack 18 on the bottom side of the aforementioned bed plate 14. Between the cleats l515 are the two rows of key slots 19 extending inwardly from one end of the plate 14. Extending inwardly from the opposite end of the plate 14 is the slot 20 bridged by the member 21 which swivelly supports the screw 22, the latter being provided with the hand wheel 23, and a nut 24 feedable thereby.

As is shown in Fig. 8, this nut 24 is slotted to receive the edge portions of the plate 14 at the said slot 20, so that the nut cannot rotate, but will serve as a follower against work interposed between the said nut 24 and. the block 26 (see Fig. 2). The block 26 is provided with headed 8o studs 27 depending therefrom for engagement into the key slots 19 in the plate 14.

In addition to the attachment aforedescribed and used principally in the shaving of work, is the means, generally refered to by numeral 28 (see Fig. 6) This shaver attachment 28 consists of a rectangular-shaped plate 29 having an elongated rectangular-shaped opening 30 therein.

This rectangular opening 30 is enlarged at the bottom side of the plate 29 so as to accommodate the shafts 3l31 on which the rolls 32 are mounted (see Fig. 6). These rolls 3232 are adapted to engage the work.

At one end of the plate 29 are the fingers 33-33 which are adapted to engage into the body 34 which has openings therein to accommodate the same and from which extends the shank 35 slidable through an opening in the bracket 36 secured to the aforementioned block 10. Interposed between the bracket 36 and the body 34 is the compressible spring 3'7. This spring along with the spring 38 serves to maintain this shaver attachment urged downwardly against the said plate 14.

An elongated bar 39 is fastened to the shaft on which the cylinder 8 rotates and extends beyond the free end thereof, and is provided with an opening to accommodate the lower end of the rod 40, which rod is fixed to the end of the bar 39 by jamb nuts 41-41. The upper end of 1 0 this rod 40 extends upwardly through an opening in the plate 29 and is equipped with a nut 42, between which and the plate 29 the aforementioned spring 38 is located.

It can now be seen, that by turning the cylinder 8, the cylindrical shell 16 will rotate so that the bed plate 14 can be fed backwardly and forwardly as desired through the gear and rack connection. In the ordinary routing operation with the attachment,-the work clamp blook26 is employed, and obviously by means of the key slots 19 and the adjusting screw 22, which feeds the nut 24, the work can be firmly secured to the bed plate 14. However, when milling is to be done, the plate 29 is to be employed for engagement against the work, for holding the work while the same cutter 7 does the milling. I

Obviously the milling operation is performed by actuating the conventional screw 6. The springs 37 and 38 maintain a steady tension against the work, so that the same cannot become displaced.

' While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials can be resorted to without departing from the spirit and: scope of the invention as claimed hereinafter.

Having thus described my invention, what I claim as new-is:-

- 1. A flat work attachment for rotary routing machines comprising a cylindrical shell for circumferential disposition around the usual routing cylinder, a ring gear on the shell, a work supporting bed plate provided with a rack for engagement with the ring gear on the shell, guide means for the said bed plate.

-3. A fiat work attachmentfor rotary routing 7 machines including the usual cylinder, router; a cylindrical shell for disposition around the cylinder router, gear teeth on said shell, a rack on the plate for engagement with the gear teeth of the shell, and. a work retaining attachment comprising a frame-like structure, and means for tensionally urging the same toward the top surface of the plate.

4. A flat work attachment for rotary routing machines including the usual cylinder router; a cylindrical shell for disposition around the cylinder router, gear teeth onsaid shell, a rack on the plate for engagement with the gear teeth of the shell, a work retaining attachment comprising a frame-like structure, and means for tensionally urging the same toward the top surface of the plate, said frame being provided with a ruler on the bottomthereof for riding engage? ment with the plate. 7 i

5. A flat work attachmentfor rotary routing machines including the usual cylinder router; a cylindrical shell .for disposition around the cylinder router, gear teeth onthe said shell, a rack on the plate for engagement with the gear teeth of the shell and adjustable work clampingmeans on the said plate. p ,7

SPENCER W. SMALL. 

